# \[PATCH\] hid: intel-ish-hid: use put\_device() instead of kfree()

- From: Arvind Yadav \<hidden\>
- Date: 2018-03-30 11:26:38 
- List: linux-input
- Page: https://ratatoskr.run/linux-input/2018/03/5246042
- Thread: https://ratatoskr.run/linux-input/2018/03/5246042/t.md

```text
Never directly free @dev after calling device_register(), even
if it returned an error. Always use put_device() to give up the
reference initialized.

Signed-off-by: Arvind Yadav <redacted>
---
 drivers/hid/intel-ish-hid/ishtp/bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/intel-ish-hid/ishtp/bus.c b/drivers/hid/intel-ish-hid/ishtp/bus.c
index f272cdd..2623a56 100644
--- a/drivers/hid/intel-ish-hid/ishtp/bus.c
+++ b/drivers/hid/intel-ish-hid/ishtp/bus.c
@@ -418,7 +418,7 @@ static struct ishtp_cl_device *ishtp_bus_add_device(struct ishtp_device *dev,
 		list_del(&device->device_link);
 		spin_unlock_irqrestore(&dev->device_list_lock, flags);
 		dev_err(dev->devc, "Failed to register ISHTP client device\n");
-		kfree(device);
+		put_device(&device->dev);
 		return NULL;
 	}
 
-- 
2.7.4
```